dillon@CORY.BERKELEY.EDU (Matt Dillon) (03/18/87)
Does this mean you reversed the pin numberings so normal expansion boxes can still be plugged into the A500? -Matt
grr@cbmvax.cbm.UUCP (George Robbins) (03/19/87)
In article <8703182042.AA14447@cory.Berkeley.EDU> dillon@CORY.BERKELEY.EDU (Matt Dillon) writes: > > Does this mean you reversed the pin numberings so normal expansion >boxes can still be plugged into the A500? > > -Matt Hmmm, this must be respond to Matt day 8-). Sliding the connector around the periphery of the case does *not* alter the relative sense of the pin-numbering. All one needs is an extender card about an 1.5" long and little jack-stands for the keyboard. If the device in question is parasitic powerwise, you may need to supply external power. Devices that obey the rules in the Amiga Expansion Architure document should work. Those that make unclean asumptions or ignore the worst-case timing specifications may have problems, as they occasionally do on production A1000's. -- George Robbins - now working for, uucp: {ihnp4|seismo|rutgers}!cbmvax!grr but no way officially representing arpa: cbmvax!grr@seismo.css.GOV Commodore, Engineering Department fone: 215-431-9255 (only by moonlite)
thierbac@umbc3.UUCP (03/23/87)
In article <8703182042.AA14447@cory.Berkeley.EDU> dillon@CORY.BERKELEY.EDU (Matt Dillon) writes: > > Does this mean you reversed the pin numberings so normal expansion >boxes can still be plugged into the A500? > > -Matt I think this means that the connector was not turned upside-down to put it on the other side; instead, it was rotated 180 degrees. Thus, when looking directly at the expansion connector, if pin X was the leftmost pin on the A1000, then it is still the leftmost pin on the A500. For an illustration, take a serial cable connector and rotate it 180 degrees, then flip it upside down, and notice the difference. Ed Thierbach